CN111977296B - Horizontal telescopic circulating type suction head material taking mechanism and working method thereof - Google Patents
Horizontal telescopic circulating type suction head material taking mechanism and working method thereof Download PDFInfo
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- CN111977296B CN111977296B CN202010986968.1A CN202010986968A CN111977296B CN 111977296 B CN111977296 B CN 111977296B CN 202010986968 A CN202010986968 A CN 202010986968A CN 111977296 B CN111977296 B CN 111977296B
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- suction head
- material taking
- suction
- guide
- conveying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
- B65G35/06—Mechanical conveyors not otherwise provided for comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/82—Rotary or reciprocating members for direct action on articles or materials, e.g. pushers, rakes, shovels
Abstract
The invention relates to a horizontal telescopic circulating type suction head material taking mechanism which comprises an inclined suction head feeding rail, wherein a conveying material taking slide block which is driven by a first electric mechanism to perform left-right reciprocating translation is arranged beside the lower end of the suction head feeding rail, and a suction head hanging groove used for connecting the lower end of the suction head feeding rail is formed in the front end of the conveying material taking slide block. This circulating suction head feeding agencies of horizontal flexible's simple structure, reasonable in design, circulation dress box, the dress box is fast, and the dress box flux is high.
Description
Technical Field
The invention relates to a horizontal telescopic circulating type suction head material taking mechanism and a working method thereof, belonging to the field of packaging.
Background
The pipette is widely applied to the fields of basic research of life science, drug research and development, cell and animal level toxicology evaluation in the field of public health, high-throughput detection of disease and prevention centers, pharmaceutical analysis, drug metabonomics and the like. In a laboratory, the usage rate of pipette tips is very high, and a large number of pipette tips are consumed in one laboratory every day. The pipette tips sold in the market are provided with box-packed tips and bagged tips which are arranged and assembled in bulk. The former is convenient to use, but is expensive, and increases the experiment cost; the latter is relatively cheap, but needs manual arrangement and assembly of the suction heads, needs a large amount of low-grade repeated labor and wastes manpower and material resources.
In the boxing process of the suction head, the scheme is generated in order to improve the material taking efficiency.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a horizontal telescopic circulating type suction head material taking mechanism and a working method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a horizontal circulating suction head feeding agencies that stretches out and draws back, includes the suction head pay-off track of slope, and suction head pay-off track's low side is equipped with the conveying of reciprocating translation about going on through the drive of first electric mechanism and gets the material slider, and the front end that the conveying got the material slider is equipped with the suction head that is used for linking up suction head pay-off track low side and hangs the groove.
Preferably, the suction head feeding track is positioned in the suction head feeding mechanism, the top and the front end of the suction head feeding track are both notches, the width of the suction head feeding track is larger than the rod body of the suction head and smaller than the outer diameter of a boss at the top of the suction head, and the top of the suction head is a round head with the largest outer diameter.
Preferably, the suction head suspension grooves are uniformly distributed along the left and right directions.
Preferably, the two end sides of the front end of the material taking sliding block are provided with rectangular bosses to form a suction head baffle, the middle part of the front end of the material taking sliding block is provided with a plurality of rectangular bosses which are distributed at equal intervals, and suction head suspension grooves are formed at intervals between the adjacent rectangular bosses.
Preferably, the first electric mechanism comprises a left and right extension ball screw driven to rotate by a motor, the left and right extension ball screw is screwed with a ball nut, the ball nut is installed at the bottom of the conveying material taking slide block, a rear side guide hole of the conveying material taking slide block is installed on a left and right extension guide rod, the left and right extension ball screw and the left and right extension guide rod are both installed on a base, and the base is installed on a bottom plate.
Preferably, the left side and the right side of the sucker feeding track are symmetrically provided with sucker guide bases, the back of each sucker guide base is uniformly provided with sucker vertical guide half holes which are the same as the sucker suspension grooves in number and correspond to the sucker suspension grooves one by one along the left and right directions, the upper part of each sucker vertical guide half hole is a major arc which enables the lower part of each sucker to enter, the lower part of each sucker vertical guide half hole is a round hole which enables the suckers to pass through, the top of each conveying and taking sliding block is provided with an electromagnetic telescopic motor, the output end of the electromagnetic telescopic motor is connected with a taking push plate to translate back and forth, the front of the taking push plate is uniformly provided with sucker vertical guide half holes which are the same as the sucker suspension grooves in number and correspond to the sucker suspension grooves one by one along the left and right directions, and the aperture of each sucker vertical guide half hole is larger than the maximum diameter of each sucker; and a sliding block and a sliding rail are arranged between the material taking push plate and the material taking conveying sliding block.
Preferably, a suction head box receiving disc is arranged on the bottom plate below the suction head feeding rail and is driven by a second electric mechanism to perform reciprocating translational motion back and forth.
Preferably, the suction head box bearing plate consists of a rectangular plate body which is respectively positioned under the two suction head material guide bases, the rectangular plate body is used for placing the suction head boxes, the number of suction head holes in each suction head hole row extending left and right on each suction head box is the same as the number of vertical material guide half holes of the suction heads on the suction head material guide bases on the same side, and the suction head holes are in one-to-one correspondence with the suction head vertical material guide half holes on the suction head material guide bases on the same side; and the suction head material guide base, the suction head feeding track and the lower part of the conveying material taking slide block are abdicating channels for the suction head box bearing disc to move back and forth.
Preferably, the second electric mechanism comprises a front and rear extension ball screw driven to rotate by a motor, the front and rear extension ball screw is in threaded connection with a ball nut, the ball nut is mounted in the middle of the suction head box receiving disc, guide holes in the left side and the right side of the suction head box receiving disc are mounted on guide rods extending in the front and rear direction, and the guide rods are mounted on the bottom plate.
A working method of a horizontal telescopic circulating type suction head material taking mechanism comprises the following steps:
s1: a boss at the middle top of the sucker is hung on the sucker feeding track; the conveying material taking slide block gradually moves forwards to enable the suction heads to enter the suction head suspension groove one by one, and bosses at the top in the suction head support are suspended on the top surfaces of adjacent rectangular bosses;
s2: when the suction head suspension grooves are filled with suction heads, the conveying material taking slide block moves to a suction head boxing position rapidly in the forward direction, the reverse suction head baffle blocks the lower end of a suction head feeding rail, and the suction heads on the suction head feeding rail stop sliding down temporarily;
s3: the electromagnetic telescopic motor drives the material taking push plate to move forwards, the material taking push plate pushes the suction head to enter a suction head vertical material guiding half hole of the forward suction head material guiding base, the suction head is inserted into a suction head hole on a forward suction head box right below along the suction head vertical material guiding half hole and a round hole, and after a row of suction head holes on the suction head box are filled, the material taking push plate is contracted and reset;
s4: the conveying material taking slide block gradually moves reversely to enable the suction heads to enter the suction head suspension groove one by one, and bosses at the top in the suction head support are suspended on the top surfaces of the adjacent rectangular bosses;
s5: when the suction head suspension grooves are filled with suction heads, the conveying material taking slide block rapidly moves to a suction head boxing position in a reverse direction, the forward suction head baffle blocks the lower end of a suction head feeding rail, and the suction heads on the suction head feeding rail temporarily stop sliding downwards;
s6: the electromagnetic telescopic motor drives the material taking push plate to move forwards, the material taking push plate pushes the suction head to enter a suction head vertical material guiding half hole of the reverse suction head material guiding base, and the suction head is inserted into a suction head hole on a reverse suction head box right below along the suction head vertical material guiding half hole and a round hole; after the same row of suction head holes on the suction head boxes on the left side and the right side are filled, the suction head box bearing disc drives the suction head boxes to move, the other row of suction head holes on the suction head boxes are aligned with the vertical material guiding half holes of the suction heads on the left side and the right side, and the material taking push plate is contracted and reset;
s7: and repeating the steps until the loading of the two suction head boxes is completed.
Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable in design gets the material fast for it is efficient to dress the box.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a first schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a second schematic structural diagram of an embodiment of the present invention.
Figure 3 is a schematic view of the configuration of the tip feed track.
Fig. 4 is a schematic structural view of a conveying material taking slide block, a suction head feeding track and a suction head material guiding base.
Figure 5 is a schematic view of the configuration of the tip cassette receiving tray.
Fig. 6 is a schematic view of a configuration of a transfer take off slide.
FIG. 7 is a schematic view of the structure of the suction head.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 to 7, a horizontal telescopic circulation type suction head material taking mechanism comprises an inclined suction head feeding rail 1, a conveying material taking slider 2 driven by a first electric mechanism to perform left-right reciprocating translation is arranged beside the lower end of the suction head feeding rail, and a suction head suspension groove 3 for connecting the lower end of the suction head feeding rail is arranged at the front end of the conveying material taking slider.
In the embodiment of the invention, the sucker feeding track is positioned in the sucker feeding mechanism 4, the top and the front end of the sucker feeding track are both provided with notches, the width of the sucker feeding track is larger than the rod body 6 of the sucker 5 and smaller than the outer diameter of a boss 23 at the top of the sucker, and the top of the sucker is provided with a round head 7 with the maximum outer diameter.
In the embodiment of the invention, a plurality of suction head suspension grooves are uniformly distributed along the left and right directions.
In the embodiment of the invention, rectangular bosses are arranged on two end sides of the front end of the conveying material taking slide block to form a suction head baffle plate 8, a plurality of rectangular bosses 9 are arranged in the middle of the front end of the conveying material taking slide block and are distributed at equal intervals, and suction head suspension grooves are formed at intervals between adjacent rectangular bosses.
In the embodiment of the invention, the first electric mechanism comprises a left and right extension ball screw 10 which is driven by a motor to rotate, a ball nut is screwed on the left and right extension ball screw, the ball nut is arranged at the bottom of the conveying and taking slide block, a rear side guide hole of the conveying and taking slide block is arranged on a left and right extension guide rod 11, the left and right extension ball screw and the left and right extension guide rod are both arranged on a base 12, and the base is arranged on a bottom plate 13.
In the embodiment of the invention, the left side and the right side of a sucker feeding track are symmetrically provided with sucker material guiding bases 14, the back surfaces of the sucker material guiding bases are uniformly distributed with sucker vertical material guiding half holes 15 which are the same as the sucker suspension grooves in number and correspond to the sucker suspension grooves one by one along the left and right directions, the bottom ends of the sucker vertical material guiding half holes are circular holes 24 which have the inner diameters slightly larger than that of the sucker vertical material guiding half holes and can enable the lower parts of suckers to enter, the top of a conveying material taking slide block is provided with an electromagnetic telescopic motor 16, the output end of the electromagnetic telescopic motor is connected with a material taking push plate 17 to translate back and forth, the front surface of the material taking push plate is uniformly distributed with sucker vertical material guiding half holes which are the same as the sucker suspension grooves in number and correspond to one by one along the left and right directions, and the apertures of all the sucker vertical material guiding half holes are slightly larger than the maximum diameter of suckers, so that suckers can be matched with the sucker vertical material guiding half holes; and a sliding block and a sliding rail are arranged between the material taking push plate and the material taking conveying sliding block.
In the embodiment of the invention, the two ends of the middle of the suction head guide base are provided with the correlation photoelectric sensor base, the correlation photoelectric sensor is used for detecting whether the suction head is arranged at the input end of the material conveying and taking slide block, if so, the material conveying and taking slide block moves to enable the other suction head suspension groove of the material conveying and taking slide block to be aligned with the suction head feeding track.
In the embodiment of the invention, a sucker box receiving disc 18 is arranged on the bottom plate below the sucker feeding track and is driven by a second electric mechanism to perform reciprocating translational motion back and forth.
In the embodiment of the invention, the suction head box receiving disc is composed of a rectangular disc body 19 which is respectively positioned right below two suction head guide bases and is used for placing a suction head box 20, the number of suction head holes 21 in each suction head hole row extending left and right on the suction head box is the same as the number of suction head vertical guide half holes on the suction head guide bases on the same side and corresponds to one another; and the suction head material guide base, the suction head feeding track and the lower part of the conveying material taking slide block are abdicating channels for the suction head box bearing disc to move back and forth.
In the embodiment of the present invention, the second electric mechanism includes a front and rear extension ball screw 22 rotated by a motor, the front and rear extension ball screw is screwed with a ball nut, the ball nut is installed at the middle of the suction head box receiving plate, the guide holes at the left and right sides of the suction head box receiving plate are installed on the guide rods extending in the front and rear direction, and the guide rods are installed on the base plate.
A working method of a horizontal telescopic circulating type suction head material taking mechanism comprises the following steps:
s1: a boss at the middle top of the sucker is hung on the sucker feeding track; the conveying material taking slide block gradually moves forwards to enable the suction heads to enter the suction head suspension groove one by one, and bosses at the top in the suction head support are suspended on the top surfaces of adjacent rectangular bosses;
s2: when the suction head suspension grooves are filled with suction heads, the conveying material taking slide block moves to a suction head boxing position rapidly in the forward direction, the reverse suction head baffle blocks the lower end of a suction head feeding rail, and the suction heads on the suction head feeding rail stop sliding down temporarily;
s3: the electromagnetic telescopic motor drives the material taking push plate to move forwards, the material taking push plate pushes the suction head to enter a suction head vertical material guiding half hole of the forward suction head material guiding base, the suction head is inserted into a suction head hole on a forward suction head box right below along the suction head vertical material guiding half hole and a round hole, and after a row of suction head holes on the suction head box are filled, the material taking push plate is contracted and reset;
s4: the conveying material taking slide block gradually moves reversely to enable the suction heads to enter the suction head suspension groove one by one, and bosses at the top in the suction head support are suspended on the top surfaces of the adjacent rectangular bosses;
s5: when the suction head suspension grooves are filled with suction heads, the conveying material taking slide block rapidly moves to a suction head boxing position in a reverse direction, the forward suction head baffle blocks the lower end of a suction head feeding rail, and the suction heads on the suction head feeding rail temporarily stop sliding downwards;
s6: the electromagnetic telescopic motor drives the material taking push plate to move forwards, the material taking push plate pushes the suction head to enter a suction head vertical material guiding half hole of the reverse suction head material guiding base, and the suction head is inserted into a suction head hole on a reverse suction head box right below along the suction head vertical material guiding half hole and a round hole; after the same row of suction head holes on the suction head boxes on the left side and the right side are filled, the suction head box bearing disc drives the suction head boxes to move, the other row of suction head holes on the suction head boxes are aligned with the vertical material guiding half holes of the suction heads on the left side and the right side, and the material taking push plate is contracted and reset;
s7: and repeating the steps until the loading of the two suction head boxes is completed. Simple structure, reasonable in design, circulation dress box, the dress box is fast, and the dress box flux is high.
The present invention is not limited to the above preferred embodiments, and other various types of horizontally extending and retracting circulating type tip extractor mechanisms and methods of operation can be devised by anyone with the benefit of the present invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a horizontal circulating suction head feeding agencies that stretches out and draws back which characterized in that: the device comprises an inclined suction head feeding track, wherein a conveying and taking sliding block which is driven by a first electric mechanism to perform left-right reciprocating translation is arranged beside the lower end of the suction head feeding track, and a suction head suspension groove used for connecting the lower end of the suction head feeding track is formed in the front end of the conveying and taking sliding block; a plurality of suction head suspension grooves are uniformly distributed along the left and right directions; rectangular bosses are arranged on the two end sides of the front end of the conveying material taking sliding block to form a suction head baffle, a plurality of rectangular bosses are arranged in the middle of the front end of the conveying material taking sliding block and are distributed at equal intervals, and suction head suspension grooves are formed at intervals between every two adjacent rectangular bosses; suction head material guide bases are symmetrically arranged on the left side and the right side of the suction head feeding track, suction head vertical material guide half holes which are the same in number as the suction head suspension grooves and are in one-to-one correspondence are uniformly distributed in the left direction and the right direction on the back of each suction head material guide base, the upper parts of the suction head vertical material guide half holes are major arcs enabling the lower parts of the suction heads to enter, the lower parts of the suction head vertical material guide half holes are round holes enabling the suction heads to pass through, an electromagnetic telescopic motor is mounted at the top of a conveying material taking sliding block, the output end of the electromagnetic telescopic motor is connected with a material taking push plate to translate back and forth, suction head vertical material guide half holes which are the same in number as the suction head suspension grooves and are in one-to-one correspondence are uniformly distributed in the left direction and the right direction on the front of the material taking push plate, and the apertures of all the suction head vertical material guide half holes are larger than the maximum diameter of the suction heads; and a sliding block and a sliding rail are arranged between the material taking push plate and the material taking conveying sliding block.
2. The horizontal telescoping circulating tip extractor mechanism of claim 1, wherein: the suction head feeding track is positioned in the suction head feeding mechanism, the top and the front end of the suction head feeding track are notches, the width of the suction head feeding track is larger than the rod body of the suction head and smaller than the outer diameter of a boss at the top in the suction head, and the top of the suction head is a round head with the maximum outer diameter.
3. The horizontal telescoping circulating tip extractor mechanism of claim 1, wherein: the first electric mechanism comprises a ball screw rod which is driven by a motor to rotate and extends leftwards and rightwards, the ball screw rod extending leftwards and rightwards is in threaded connection with a ball nut, the ball nut is installed at the bottom of the material taking slider through conveying, a rear side guide hole of the material taking slider through conveying is installed on a left extending guide rod and a right extending guide rod, the left extending ball screw rod and the right extending guide rod are installed on a base, and the base is installed on a bottom plate.
4. The horizontal telescoping circulating tip extractor mechanism of claim 1, wherein: and a suction head box receiving disc is arranged on the bottom plate below the suction head feeding track and is driven by a second electric mechanism to perform reciprocating translational motion back and forth.
5. The horizontal telescoping circulating tip extractor mechanism of claim 4, wherein: the suction head box bearing plate consists of rectangular plate bodies which are respectively positioned under the two suction head guide bases, the rectangular plate bodies are used for placing the suction head boxes, the number of suction head holes in each suction head hole row which extends left and right on the suction head boxes is the same as the number of vertical suction head guide half holes in the suction head guide bases on the same side, and the suction head holes are in one-to-one correspondence with the suction head vertical guide half holes in the suction head guide bases on the same side; and the suction head material guide base, the suction head feeding track and the lower part of the conveying material taking slide block are abdicating channels for the suction head box bearing disc to move back and forth.
6. The horizontal telescoping circulating tip extractor mechanism of claim 5, wherein: the second electric mechanism comprises a front-back extension ball screw driven to rotate by a motor, the front-back extension ball screw is in threaded connection with a ball nut, the ball nut is mounted in the middle of the suction head box bearing disc, guide holes in the left side and the right side of the suction head box bearing disc are mounted on guide rods extending in the front-back direction, and the guide rods are mounted on the bottom plate.
7. A method of operating a horizontal recirculating type tip extractor as claimed in any one of claims 1 to 6, comprising the steps of:
s1: a boss at the middle top of the sucker is hung on the sucker feeding track; the conveying material taking slide block gradually moves forwards to enable the suction heads to enter the suction head suspension groove one by one, and bosses at the top in the suction head support are suspended on the top surfaces of adjacent rectangular bosses;
s2: when the suction head suspension grooves are filled with suction heads, the conveying material taking slide block moves to a suction head boxing position rapidly in the forward direction, the reverse suction head baffle blocks the lower end of a suction head feeding rail, and the suction heads on the suction head feeding rail stop sliding down temporarily;
s3: the electromagnetic telescopic motor drives the material taking push plate to move forwards, the material taking push plate pushes the suction head to enter a suction head vertical material guiding half hole of the forward suction head material guiding base, the suction head is inserted into a suction head hole on a forward suction head box right below along the suction head vertical material guiding half hole and a round hole, and after a row of suction head holes on the suction head box are filled, the material taking push plate is contracted and reset;
s4: the conveying material taking slide block gradually moves reversely to enable the suction heads to enter the suction head suspension groove one by one, and bosses at the top in the suction head support are suspended on the top surfaces of the adjacent rectangular bosses;
s5: when the suction head suspension grooves are filled with suction heads, the conveying material taking slide block rapidly moves to a suction head boxing position in a reverse direction, the forward suction head baffle blocks the lower end of a suction head feeding rail, and the suction heads on the suction head feeding rail temporarily stop sliding downwards;
s6: the electromagnetic telescopic motor drives the material taking push plate to move forwards, the material taking push plate pushes the suction head to enter a suction head vertical material guiding half hole of the reverse suction head material guiding base, and the suction head is inserted into a suction head hole on a reverse suction head box right below along the suction head vertical material guiding half hole and a round hole; after the same row of suction head holes on the suction head boxes on the left side and the right side are filled, the suction head box bearing disc drives the suction head boxes to move, the other row of suction head holes on the suction head boxes are aligned with the vertical material guiding half holes of the suction heads on the left side and the right side, and the material taking push plate is contracted and reset;
s7: and repeating the steps until the loading of the two suction head boxes is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010986968.1A CN111977296B (en) | 2020-09-18 | 2020-09-18 | Horizontal telescopic circulating type suction head material taking mechanism and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010986968.1A CN111977296B (en) | 2020-09-18 | 2020-09-18 | Horizontal telescopic circulating type suction head material taking mechanism and working method thereof |
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| CN111977296B true CN111977296B (en) | 2022-04-12 |
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| IT1292841B1 (en) * | 1997-04-08 | 1999-02-11 | Azionaria Costruzioni Acma Spa | METHOD AND DEVICE FOR THE ALIGNMENT OF PRODUCTS. |
| CN103466117B (en) * | 2013-09-30 | 2017-06-27 | 临海市东泓科学仪器有限公司 | A kind of suction nozzle box packing machine |
| CN104176313B (en) * | 2014-08-25 | 2016-06-01 | 苏州倍易生物科技有限公司 | Swing type pipettor suction nozzle lorry loader |
| CN104176312B (en) * | 2014-08-25 | 2016-08-03 | 苏州倍易生物科技有限公司 | Suction pipette head automatic loader |
| CN104354907B (en) * | 2014-10-13 | 2016-08-24 | 李俊 | The slidingtype loader mechanism being applied on suction pipette head automatic loader |
| CN204124404U (en) * | 2014-10-13 | 2015-01-28 | 李俊 | Be applied to the oscillating type swing type mechanism on suction pipette head auto loader |
| CN206445785U (en) * | 2016-11-30 | 2017-08-29 | 昆明医科大学 | A kind of liquid transfer gun head transfer device |
| CN209852653U (en) * | 2019-05-05 | 2019-12-27 | 郑州科蒂亚生物技术有限公司 | Suction head boxing device of pipettor |
| CN110451274A (en) * | 2019-09-18 | 2019-11-15 | 福州大学 | Small-sized liquid-transfering gun suction nozzle charging appliance and stowage |
| CN210943941U (en) * | 2019-09-18 | 2020-07-07 | 福州大学 | Suction head loading equipment for small-sized liquid-transfering gun |
| CN110639633B (en) * | 2019-09-30 | 2024-04-09 | 北京融鑫生物科技有限公司 | Pipette suction head boxing device and boxing method thereof |
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| CN107618846A (en) * | 2017-10-27 | 2018-01-23 | 田英 | A kind of collating unit of liquid-transfering sucker |
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